TY - RPRT TI - The changing shapes of active volcanoes: History, evolution, and future challenges for volcano geodesy AU - Michael P. Poland AU - Michael W. Hamburger AU - Andrew V. Newman PY - 2006 DO - 10.1016/j.jvolgeores.2005.11.005 UR - https://pubs.usgs.gov/publication/70179216 ID - 70179216 ER -